Location: Bangalore, India Full-time, In-Person

Experience: 6-10+ years

Mode of work: 5 days WFO

About the role

We are looking for a Principal Engineer to drive technical strategy, architecture and engineering excellence while remaining hands-on in building critical systems. You'll design scalable solutions, solve complex technical challenges, mentor engineers and make key architectural decisions across the platform.

As an early technical leader, you will work closely with business and product teams, contribute directly to implementation when needed and help establish the foundations, practices and standards that enable the company to scale.

Before you apply

- This is a hands-on Principal Engineer role. We are looking for a technical leader who can drive architecture and strategy while also writing code, reviewing designs and contributing directly to critical systems when needed.
- We value builders over titles. Your impact matters more than your designation we are looking for engineers who have designed, shipped, and operated production systems at scale.
- Strong technical depth is essential. This role requires expertise in system design, cloud architecture, backend engineering and the ability to make pragmatic technical decisions in a fast-moving startup environment.

Key Responsibilities
- Define and drive the long-term technical architecture and engineering strategy across multiple products and services.
- Lead the design of highly scalable, secure, and reliable distributed systems.




- Solve complex technical challenges and make architectural decisions that balance scalability, performance, maintainability and cost.
- Design and build serverless backends in Python. Architect and implement scalable services using FastAPI and AWS Lambda, from API contract through business logic to data persistence.
- Own services in production. Take features end-to-end API → queue → worker → database and stand behind them: CI/CD, observability, alerting and the on-call that comes with running real systems.
- Model data that holds up. Design relational schemas, write and tune SQL, manage migrations, and keep query performance healthy on PostgreSQL / RDS as data volumes grow.
- Build agentic and LLM-powered features. Help design and ship the AI capabilities at the center of our roadmap - orchestration, tool-calling, retrieval and prompt engineering against modern LLMs.
- Architect for scale and cost. Make deliberate trade-offs around performance, scalability, and cost-efficiency in a serverless AWS environment.
- Treat infrastructure as code. Provision and evolve cloud infrastructure with Terraform, keeping environments reproducible and reviewable.
- Raise the engineering bar. Write clean, modular,



well-tested code; review pull requests thoughtfully; document decisions; and mentor less-experienced engineers.
- Collaborate across functions. Work directly with product, design, and other engineers to shape requirements, and communicate technical work clearly including in demos to internal and external stakeholders.
- Engage directly with clients. This is a client-facing role. You'll join client conversations, present technical work and product capabilities in demos, gather and clarify requirements first-hand and represent the team in calls, reviews and occasionally conferences.
- Hands-on, production AWS serverless experience that you have personally deployed and maintained -Lambda, API Gateway, SQS, S3 and RDS at minimum.
- Proven experience designing and operating production REST APIs with FastAPI (or an equivalent Python framework).

What we offer
- Market-competitive salary, accelerated growth.
- A high-ownership role on a real production platform using modern, bleeding-edge technology including the agentic AI features defining the next phase of the product.
- Direct collaboration with product and leadership, and visibility for your work.
- Professional growth through mentorship, learning resources, and career development.
- A collaborative, in-person engineering culture that values craft, clarity, and innovation

Pay: ₹500,000.00 - ₹1,000,000.00 per year

Benefits

- Commuter assistance
- Flexible schedule
- Health insurance
- Leave encashment
- Paid sick time
- Provident Fund

Work Location: In person

📌 Engineering Manager (Python · AWS Serverless) (Bengaluru)
🏢 RSB MEDTECH
📍 Bengaluru